- Allison Insurance
- 21st Century Insurance
- Aetna
- Aflac
- Alleghany Corporation
- Allied Insurance
- Allstate
- American Automobile Association
- American Family Insurance
- American Income Life Insurance Company
- American International Group (AIG)
- American National Insurance Company
- American United Life Insurance Company
- Ameritas Life Insurance Company
- Amica Mutual Insurance
- Assurant
- Auto-Owners Insurance
- AXA Equitable Life Insurance Company
- Bankers Life and Casualty Company
- Berkshire Hathaway
- California Casualty
- Cincinnati Insurance Company
- CNA Financial
- Colonial Life & Accident Insurance Company
- Commerce Insurance Group
- Conseco
- Country Financial
- Chartis
- Chubb Corp.
- Direct General Auto Insurance
- Elephant.com
- Encompass Insurance Company
- Erie Insurance Group
- Esurance
- Evergreen USA RRG
- FM Global
- Farmers Insurance Group
- Federated Mutual Insurance Company
- First Insurance Company of Hawaii, LTD
- GAINSCO
- GEICO
- General Re
- Genworth Financial
- GMAC Insurance
- Great West Casualty Company
- Gracy Title Company
- Guardian Life Insurance Company of America
- GuideOne Insurance
- Hanover Insurance
- The Hartford
- HCC Insurance Holdings
- Infinity Property & Casualty Corporation
- IntelliQuote Insurance Services
- Jackson National Life
- John Hancock Insurance
- K&K Insurance
- Kentucky Farm Bureau
- Knights of Columbus
- Liberty Mutual
- Lincoln National Corporation
- Markel Corporation
- MassMutual Financial Group
- Merchants Insurance Group
- Mercury Insurance Group
- MetLife
- Mutual of Omaha
- National Life
- Nationwide Mutual Insurance Company
- New Jersey Manufacturers Insurance Company
- New York Life Insurance Company
- Northwestern Mutual
- Ohio National Financial Services
- Omega
- OneBeacon
- Oxford Health Plans
- Pacific Life
- Pacificare
- PEMCO
- Penn Mutual
- Philadelphia Contributionship for the Insurance of Houses from Loss by Fire
- Philadelphia Insurance Companies
- Principal Financial Group
- Primerica Financial
- Progressive
- Protective Life
- Prudential Financial
- The Regence Group
- Reliance Insurance Company
- RLI Corp.
- Safe Auto Insurance Company
- Safeco
- Safeway Insurance Group
- Sentry Insurance
- Selective Insurance
- Shelter Insurance
- Southern Aid and Insurance Company
- Standard Insurance Company
- State Farm Insurance
- Sun Life Financial
- Symetra
- TIAA-CREF
- The Travelers Companies
- Trupanion
- Unitrin Direct Auto Insurance
- Unum
- USAA
- West Coast Life
- Western Mutual Insurance Group
- Western & Southern Financial Group
- Westfield Insurance
- White Mountains Insurance Group
Annuity
Main article: Life annuity
- Allstate
- American Family Insurance
- American Fidelity Assurance
- Amica Mutual Insurance
- AXA Equitable Life Insurance Company
- Bankers Life and Casualty
- Conseco
- Farmers Insurance Group
- Fidelity
- Genworth Financial
- ING Group
- Jackson National Life
- John Hancock Insurance
- Lincoln National Corporation
- MetLife
- Mutual of Omaha
- Nationwide Mutual Insurance Company
- Old Mutual
- Pacific Life
- Protective Life
- Prudential Financial
- Standard Insurance Company
- State Farm Insurance
- Thrivent Financial for Lutherans
- TIAA-CREF
- Transamerica Corporation
- UNIFI Companies
- United of Omaha
- Western & Southern Financial Group
Health insurance (major medical insurance)
Main articles: Health insurance and Health insurance in the United States
- AARP
- Aetna
- American Family Insurance
- American National Insurance Company
- Amerigroup
- Anthem Blue Cross and Blue Shield
- Assurant
- Blue Cross and Blue Shield Association
- Centene Corporation
- Cigna
- Coventry Health Care
- EmblemHealth
- Fortis
- Golden Rule Insurance Company
- Group Health Cooperative
- GHI
- Health Net
- HealthMarkets
- HealthSpring
- Highmark
- Humana
- Independence Blue Cross
- Kaiser Permanente
- Kaleida Health
- LifeWise Health Plan of Oregon
- Medical Mutual of Ohio
- Molina Healthcare
- Premera Blue Cross
- Principal Financial Group
- The Regence Group
- Shelter Insurance
- Thrivent Financial for Lutherans
- UnitedHealth Group
- Unitrin
- Universal American Corporation
- WellCare Health Plans
- WellPoint
Main article: Medicare (United States)
- Aetna
- American Family Insurance
- Bankers Life and Casualty
- Conseco
- Kaiser Permanente
- Mutual of Omaha
- Premera Blue Cross
- Thrivent Financial for Lutherans
- Tricare
Supplemental insurance
- Aflac
- Allstate
- American Fidelity Assurance
- Assurant
- Colonial Life & Accident Insurance Company
- Conseco
- Liberty National Life Insurance Company
- MEGA Life and Health Insurance
- Mutual of Omaha
- National Teachers Associates Life Insurance Company
- State Farm Insurance
Travel insurance
Main article: Travel insurance
- Mondial Assistance Group
- Travel Guard
- USA-ASSIST Worldwide Protection
Workers' compensation
Main article: Workers' compensation
Assist CardBrickStreet Mutual Insurance
- Cincinnati Financial Corporation
- Erie Insurance Group
- Hanover Insurance
- The Hartford
- Liberty Mutual
- Merchants Insurance Group
- Missouri Employers Mutual
- Nationwide Mutual Insurance Company
- Penn National Insurance
- Republican Ideminity Co
- Sentry Insurance
- State Accident Insurance Fund
- State Compensation Insurance Fund
- State Farm Insurance
- WellPoint
- Zenith Insurance Company